Caerfai Bay on the Pembrokeshire coast

Holyhead ferry port

Photo: John Disandolo / Unsplash

Ferryu lists 1 ferry route from Holyhead.

Ferries leave Holyhead for Dublin, with Irish Ferries and Stena Line.

Pick a route to see the operators I list on it and where to book with them.

Ferries from Holyhead

Crossings from and to Holyhead

DublinHolyhead
Map data: Natural Earth. Port locations © OpenStreetMap contributors.

Weather in Holyhead

  • Warmest month: July, average high 19°C.
  • Wettest month: November, about 105 mm of rain.
  • Sea at its warmest in August, about 17°C.

Temperature

  • Air, average daily low to high (1991–2020)
  • Sea surface, monthly average (2023–2024)
05101520°CJFMAMJJASONDJanuary: air 4.9 to 8.6°C, sea 8.9°CFebruary: air 4.7 to 8.5°C, sea 8.6°CMarch: air 5.3 to 9.8°C, sea 8.5°CApril: air 6.7 to 12.0°C, sea 9.8°CMay: air 9.0 to 14.9°C, sea 12.4°CJune: air 11.4 to 17.1°C, sea 14.8°CJuly: air 13.4 to 18.7°C, sea 16.0°CAugust: air 13.4 to 18.6°C, sea 16.7°CSeptember: air 11.9 to 17.0°C, sea 16.3°COctober: air 9.8 to 14.1°C, sea 14.6°CNovember: air 7.4 to 11.2°C, sea 12.8°CDecember: air 5.5 to 9.2°C, sea 10.7°C19°

Rain

Average total for the month, mm (1991–2020)

0255075100125 mmJFMAMJJASONDJanuary: 85.3 mmFebruary: 72.5 mmMarch: 70.8 mmApril: 64.5 mmMay: 62.7 mmJune: 65.9 mmJuly: 61.1 mmAugust: 74.3 mmSeptember: 75.3 mmOctober: 95.4 mmNovember: 104.7 mmDecember: 99.9 mm105

Temperature

  • Air, average daily low to high (1991–2020)
  • Sea surface, monthly average (2023–2024)
05101520°CJFMAMJJASONDJanuary: air 4.9 to 8.6°C, sea 8.9°CFebruary: air 4.7 to 8.5°C, sea 8.6°CMarch: air 5.3 to 9.8°C, sea 8.5°CApril: air 6.7 to 12.0°C, sea 9.8°CMay: air 9.0 to 14.9°C, sea 12.4°CJune: air 11.4 to 17.1°C, sea 14.8°CJuly: air 13.4 to 18.7°C, sea 16.0°CAugust: air 13.4 to 18.6°C, sea 16.7°CSeptember: air 11.9 to 17.0°C, sea 16.3°COctober: air 9.8 to 14.1°C, sea 14.6°CNovember: air 7.4 to 11.2°C, sea 12.8°CDecember: air 5.5 to 9.2°C, sea 10.7°C19°

Rain

Average total for the month, mm (1991–2020)

0255075100125 mmJFMAMJJASONDJanuary: 85.3 mmFebruary: 72.5 mmMarch: 70.8 mmApril: 64.5 mmMay: 62.7 mmJune: 65.9 mmJuly: 61.1 mmAugust: 74.3 mmSeptember: 75.3 mmOctober: 95.4 mmNovember: 104.7 mmDecember: 99.9 mm105
Show the numbers
Monthly averages for Holyhead
MonthHigh °CLow °CRain mmSea °C
January8.64.985.38.9
February8.54.772.58.6
March9.85.370.88.5
April12.06.764.59.8
May14.99.062.712.4
June17.111.465.914.8
July18.713.461.116.0
August18.613.474.316.7
September17.011.975.316.3
October14.19.895.414.6
November11.27.4104.712.8
December9.25.599.910.7

1991–2020 averages, ERA5 via Open-Meteo, read at the grid point nearest the port (11 km away). Sea surface: 2023–2024 averages from the Open-Meteo Marine Weather API, which has no sea temperatures before late 2022.

Ferry operators at Holyhead